Glass plate substitute film, and display device

a technology of glass plate and substitute film, applied in the direction of electrically conductive paints, synthetic resin layered products, adhesive types, etc., can solve the problems of high demand for reducing thickness, high demand for glass plate replacement, and general fragility of glass plate, and achieve superior impact resistance and light weight, sufficient scratch-preventing properties, and superior substitutability

Inactive Publication Date: 2018-09-11
KEIWA INCORPORATED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0020]As explained in the foregoing, the glass plate substitute film according to the aspect of the present invention has superior substitutability for glass plates due to having superior impact resistance and light weight compared with glass plates, as well as sufficient scratch-preventing property, blooming resistance and yellowing resistance. In addition, the display device according to the another aspect of the present invention allows the impact resistance and lightweight properties of the front plate to be improved as compared with glass plates, and the scratch-preventing property, blooming resistance and yellowing resistance of the front plate can be improved.

Problems solved by technology

However, glass plates are generally fragile, and thus are likely to be broken when impact is applied thereon.
In particular, reduction in thickness is strongly demanded for display devices and the like, and glass plates having a reduced thickness to meet such demands are even more likely to be broken.
In addition, glass plates are inferior in handleability since they are comparatively heavy in weight.

Method used

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  • Glass plate substitute film, and display device
  • Glass plate substitute film, and display device
  • Glass plate substitute film, and display device

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

Glass Plate Substitute Film

[0031]The glass plate substitute film 1 shown in FIG. 1 includes a substrate layer 2, and a surface layer 3 overlaid on one side of the substrate layer 2. The glass plate substitute film 1 shown in FIG. 1 is formed as a two-layer structure including the substrate layer 2 and the surface layer 3. The glass plate substitute film 1 shown in FIG. 1 is transparent. The glass plate substitute film 1 shown in FIG. 1 is flexible. The glass plate substitute film 1 shown in FIG. 1 is used as a substitute for conventional glass plates. It is to be noted that each figure herein shows a schematic view and the dimension and the like may differ from actual one.

[0032]The lower limit of the average thickness of the glass plate substitute film 1 is preferably 120 μm, more preferably 300 μm, and still more preferably 400 μm. On the other hand, the upper limit of the average thickness of the glass plate substitute film 1 is preferably 1,040 μm, more preferably 800 μm, and sti...

second embodiment

[0094]The glass plate substitute film 11 shown in FIG. 2 includes a substrate layer 4, and the surface layer 3 overlaid on one side of the substrate layer 4 similarly to the first embodiment. The glass plate substitute film 11 shown in FIG. 2 is formed as a two-layer structure composed of the substrate layer 4 and the surface layer 3. Since the surface layer 3 is similar to that in the glass plate substitute film 1 shown in FIG. 1, the description is omitted through designating with the identical reference number. In addition, the average thickness and the pencil hardness of one side face of the glass plate substitute film 11 are similar to those of the glass plate substitute film 1 shown in FIG. 1. The glass plate substitute film 1 shown in FIG. 2 is transparent. The glass plate substitute film 11 shown in FIG. 2 is flexible. The glass plate substitute film 11 shown in FIG. 2 is used as a substitute for conventional glass plates.

[0095]Substrate Layer

[0096]The substrate layer 4 is f...

third embodiment

[0103]The glass plate substitute film 21 shown in FIG. 4 includes the substrate layer 2, a surface layer 5 overlaid on one side of the substrate layer 2, and an adhesion layer 6 provided between the substrate layer 2 and the surface layer 5, whereby the substrate layer 2 and the surface layer 5 are adhered via the adhesive layer 6. The glass plate substitute film 21 shown in FIG. 4 is formed as a three-layer structure including the substrate layer 2, the surface layer 5 and the adhesion layer 6. Since the substrate layer 2 is similar to that in the glass plate substitute film shown in FIG. 1 or FIG. 2, the description is omitted through designating with the identical reference number. In addition, the pencil hardness of one side face of the glass plate substitute film 21 is similar to that of the glass plate substitute film shown in FIG. 1 or FIG. 2. The glass plate substitute film 21 shown in FIG. 4 is transparent. The glass plate substitute film 21 shown in FIG. 4 is flexible. The...

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Abstract

Provided is a glass plate substitute film having superior substitutability for glass plates due to having superior impact resistance and light weight compared with glass plates, as well as sufficient scratch-preventing property, blooming resistance and yellowing resistance. The glass plate substitute film of the present invention includes: a substrate layer; and one or a plurality of surface layers overlaid on one side or both two sides of the substrate layer, wherein the substrate layer contains as a principal component a polycarbonate having a constitutional unit derived from a dihydroxy compound represented by the following formula (1), and wherein the dihydroxy compound is an extract of a plant or a derivative thereof. At least one surface layer of the one or the plurality of surface layers preferably contains an active energy ray-curable resin as a principal component. The active energy ray-curable resin is preferably an ultraviolet ray-curable epoxy resin.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a glass plate substitute film, and a display device.[0002]Conventionally, glass plates have been employed as a flat panel display, a front plate for display devices of portable terminals and the like (see Japanese Unexamined Patent Application, Publication No. 2011-209695). Such glass plates are provided for the purpose of, e.g., enhancing the strength of the front face side of display panels.[0003]However, glass plates are generally fragile, and thus are likely to be broken when impact is applied thereon. In particular, reduction in thickness is strongly demanded for display devices and the like, and glass plates having a reduced thickness to meet such demands are even more likely to be broken. Therefore, when a glass plate is used as the front plate as described above, a protection film is frequently attached on the surface of the front plate in order to prevent the breakage. In addition, glass plates are inferior i...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C09D163/00C08G64/02C08J5/18C09D5/24B32B27/36
CPCC09D163/00B32B27/365C08G64/0208C09D5/24C08J5/18C08J2369/00B32B2369/00C09J163/00
Inventor ARAKAWA, AKIRA
Owner KEIWA INCORPORATED
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